Safety-envelop.



S. H. LOEFPLER. SAFETY ENVELOP.

APPLICATION FILED JUNE 18, 1910.

966,934. Patented Aug. 9, 1910.

W'ITESSES SAMUEL H. LOEFFLER, OF NEW KENSINGTON, PENNSYLVANIA.

SAFETY-ENVELOP.

Specification of Letters Patent.

Patented Aug. 9, 1910.

Application filed June 18, 1910. Serial No. 567,711.

To all whom it may concern:

Be it known that I, SAMUEL H. LOEFFLER, a subject of the King ofHungary, residing at New Kensington, in the county of Westmoreland andState of Pennsylvania, have I invented certain new and usefulImprovements in Safety-Envelops, of which the following is aspecification, reference being had therein to the accompanying drawing.

This invention relates to safety envelope, and the objects of myinvention are to provide an envelop that cannot be surreptitiouslyopened without detection, and to provide an envelop that is simple inconstruction, durable, inexpensive to manufacture, and efficient fortransmitting valuable matter through the mail. These and such other objects as may hereinafter appear are attained by the construction shownin the drawing forming a part of this specification, wherein:

Figure 1 is a plan of the envelop in an open position. Fig. 2 is a planof a detached back-piece. Fig. 3 is a plan of the envelop folded andsealed. Fig. 1 is an enlarged cross sectional View taken on the line y-yof Fig. 3, and Fig. 5 is a longitudinal sectional view taken on the linewm of Fig. 3.

1n the drawings the reference numeral 1 denotes a rectangular bodyprovided with end flaps 2 adapted to be folded upon the dot and dashlines 3. These end flaps have the rear sides thereof gummed or providedwith an adhesive material 4: and each flap adjacent to the upper endthereof is perforated, as at 5.

The lower edge of the body 1 is provided with a bottom flap 6 adapted tobe folded upon the dot and dash line 7, said bottom flap having theouter portion thereofre.

duced, as at 8, and this reduced portion adjacent to the outer edgethereof is perforated, as at 9, and provided with slits or slots 10. Theentire rear face of the flap 6 is gummed or provided with an adhesivematerial 11.

The upper edge of the body 1 is provided with a top flap 12 adapted tobe folded on the dot and dash line 13, said. top flap h, vinglongitudinally arranged perforations lt adjacent to the outer edgethereof, and this outer edge is provided with tongues 15. The flap 12upon one side is gumined, as at 16, and the tongues 15 are gummed on theopposite side from that of the flap 12.

The reference numeral 17 denotes a back piece corresponding in size tothe body 1.

After the baclcpiece 17 is placed upon the body 1, the end flaps 2 aremoistened, folded inwardly upon the back-piece 17 and sealed. The bottomflap 6 is then moistened as far as the perforations 9, and is thenfolded on the back-piece 17 and sealed thereto. The lower part of theflap Gfprevents the lower edges of the end flaps 2 from being tamperedwith, while the reduced portion of the flap 6 lies between the end flaps2. The envelop is now ready to receive matter. To close the envelop theflap 12, is moistened, bent downwardly, the tongues thereof inserted inthe slits or slots 10, the tongues moistened and the edge of the flap 6moistened. After the flap 12 has been sealed upon the upper part of theback-piece 17, the edge of the flap (5 is sealed and then the tonguesbent upwardly and sealed, as best shown in Fig. 3 of the drawings.

It will be noted that the perforations 5, l0, and 11 are located at suchpoints where the envelop might be tampered with, and these perforationswill assist in the detection of any tampering with the envelop, alsofacilitating the operation of opening the envelop with a knife.

The envelop can be made of paper, paperoid, or a similar-durablematerial.

hat I claim, is:

An envelop of the type described, comprising a rectangular body, aback-piece mounted upon said body, end flaps carried by said body andadapted to be folded inwardly and sealed upon the outer side of saidbaclcpiece, a bottom flap adapted to be folded upwardly upon saidback-piece and adhesively secured thereto, said bottom flap having slitsformed therein adjacent to the upper edge, a top flap adapted to befolded downwardly upon said end flaps and said bottom flap andadhesively secured to said flaps, and tongues carried by the edge ofsaid top flap and adapted to be placed in the slits of said bottom flapand folded upwardly and ad- SAMUEL I-I. LOEFFLER.

Witnesses R. V1 Lonrrnnn, J OSEPI-I LOEFFLER.

